2004 Jeep grand cherokee

hi guys ,new to towing .Have just gotten a 20 ft. flying cloud and am pulling it with a 2004 jeep g.c. with the 4.7 ho .The jeep was not a tow package originally I added a resse hitch, o.e.m. wiring ,large trans .cooler ,p3 brake controller and mirrors. On both tows it pulled and stopped alright , but I feel that the jeep pitch's front to back to much .I will change the shocks soon and hope that helps (any advice on brand ?). But was looking for advice on possible spring and sway bar upgrades. I can find used tow package coil springs ,or new moog brand std. fitment (not specked for tow) fairly easy. I should mention it has standard coils now. I rather not band aid it with air bags .also jeep buffs recommend an Addco brand rear sway bar,how would that affect towing ? thanks for any input ! oh ya have an equl- I- zer hitch ,fitted ,also.